Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e67e4c1b9393fcf4307a298802f697658adc3c98507af9efb6c0a070710a7a0e' 
  AND token = 'tmtkgKo7YwErQNUbyTal8dU9/HxPfdnd5+ShEpEcGpo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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