Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '63456c43a026bfaaf1486935e8e3738d00e8ae0a87e4328a42dc0d3168c4d531' 
  AND token = 'HyXU+efGDfBeqqGJOhAIlgVL2lru878Yolh+u2ssqWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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