Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34d94b74d8609dbf237c2dbae5ca1681cfe5bcef4983b47c99486af35792862f' 
  AND token = 'MF9BeyhiD45JZDVAACMiO5AATE6Qv1/9iTibNbwHPEg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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