Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e2a6eeaae01a0d9f97be525eaa5f3bb15411a29a468330db9132b530c073f860' 
  AND token = 'ozAhi9SBvdIrcKG+G+3DM9nmAJ+Jeszg6FPdW4f71uA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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