Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67c3e2e0cdbbb7a024e14f4f94b456154d87808aa54da1977b839472a97f718b' 
  AND token = 'b0oYWzav+fWJrW3htNiI2UPOlfRfBSoTmXuBlDB2aq0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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