Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b4baa774c66ef286d9eef0651cb31f833db54ef7559f9f39607d6ca58aab3c7e' 
  AND token = 'k99pOO3Y1841pjobGvqO1q4MP1v7hhxDrWcoQCsKHIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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