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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01304a7b528e6f55064737679e6dd46de86055439ae349b68c692470b6b0a18e' 
  AND token = 'oqzK3Gm1rZLmB6VHvxI8j6xp+OMOFtDMfK2eA81o07E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}