Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58069c86e2bf178cbabdf3ad8d1b1b465452a459e396dab8b7b6b9c81504b760' 
  AND token = '0Aao4icf3mAOH1Zof2m4gbib/fUf1SV+n+MCYGvJSmA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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