Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '200dcbc8ae298ab36d0ec4a1d7d1a6948ec13dccaeb3ecaa46ae3e52061e7c1f' 
  AND token = 'QV6zP0HKzmn5hkwWLbgJ7SF6d37ImacJxrErH6dw3ys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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