Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9c5ba71021f3c81444511f4e92e08c8250673c53ba69f706bd85b29ea7c71f69' 
  AND token = '32PIeYgyNaW9z1j8s7crFAbaqwLL9ZOJTheuhAkcxfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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