Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bffd71c7dcedcb512049c0303aac0a5f545f29cd40c6e05eabbc17accc7a559e' 
  AND token = '88sVAMzEqtzDyti0WojEuBQyDd2cTiZ80fBRiJhVDfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}