Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f195abc7c6e1457992ab8c11ab69271a2948ad7db816b594ecc877a4cd5a7786' 
  AND token = 'RD6TWLEReJT/ubB5UOzuE1/xNpkAFj/Mro6AgtMnGHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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