Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c1e6bda260374a0d895fa620304f710a538652c714b17f445db3ceadcc90328' 
  AND token = 'HqHJJ7GL6fKYL9L4iHKeSQbL5xYZK7oi2VPpj9QTK2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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