Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13d662477ac55cb4e503c7499be2cfe5f84c9ceaf9ae1ee6a115dc46b6abdb32' 
  AND token = 'pjtINxpZieUJ+G14Jq5iP9vDSX3SWVcRH13ws9+EfMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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