Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5eece6898cfc1fac2e836b313bd28ec7c0cb938624f1d6c8443608deab8d501a' 
  AND token = 'vIHk0qwlZ97rdfmJ16VZ3sbR2kF1aoyLOYSx5NoRdsg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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