Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09375f870d7d0ededacc94286e82125411d84ba345de4d7e7ff2cf2670eae3d6' 
  AND token = 'RLKEad5UFvZLGy+EOhCydNIFucW5Y/DP24Kq+Ohp4AA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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