Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf02f4c1dde0527076cd08ec3c334456b7e31e8e5602f80664ea045bf76582e3' 
  AND token = 'Z0Y4RuW6O/wYTJgllj9kSk7A6w5KvXM334vNd/0qDUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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