Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4903e391cfabf64cc191304cb5279f78c70165363990f90461792b9d824f636c' 
  AND token = 'tnl3H5yWarBrNLX3uklmR0VpX049TA6CV1WGhQTaSC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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