Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96b142d3c0769fbf0464a9104eb109634bdfa0923a714b2ef61910ba0c360cd5' 
  AND token = 'TKyqTq7DjC2CMeXlbBUzmTC0u87ZqBUBnAG4ugJvvLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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