Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c89972fbd526f62078b0b90e214fbcdbd9b76032ba06d58841536c90477d85b6' 
  AND token = '+1emx1td1Fwi2Q6tuhduOqmK8W/x5BqAA10oL+fppD8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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