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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '905809edef7b83b5a46178830896e42bb933fd8ee3467105b305bb13a3fd2afd' 
  AND token = 'vz8Wd8Q/u1+kK6suXU8PTU/AgE9m7pIjBBN/jauT/dA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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