Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'baa44a90eedcbeaefd74c335ec21780661dfb5bc62a3b0701526870e776467c8' 
  AND token = 'AMhJ7iseU4e4IrEoqmM2gyA9dqdLLAjRdEhSEAJ/3fw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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