Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ca5ef5befef139ab80c77319be3ea92560bda33c9319669b155b26ab55f5f25' 
  AND token = 'Bay49hM+hfDTNQxyUUCwnbORKzhIVnZD2TzGKgmKy74=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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