Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2eacec126a4ae2e38229f9576c90b0886d2113bdabed4408a82588e7767c83b4' 
  AND token = '8Cyj38wRy+ITL8L5fYc12qgh+7OK3oNvCSojNIFOiH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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