Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a87cfd8863d530525a1adfa82a6e5094b0bd47219677debf189ae0fa6ffbcde5' 
  AND token = 'PLNlszpgM1SMSpHvaJjENrE5DU5brCupXS3z9eJ9Uyg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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