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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4c1061175d2c24cd8296bf495b5d7f25031cc9682310e82dd9673e6220e8ced' 
  AND token = 'vCvJEa3Mx+x6wln+b74+WTTHPmuutb3jjz811gHOOPM=' 
  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"
    }
  }
}