SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70e12a76b5a5b0a9e9eefa51c47d3c22c2836f9d04c42e5895387ff7c6353156' 
  AND token = '/hurIZo9iv65fzVk2GV8LHpGJ+FHYS96f5FKcRRb9no=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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