Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '662f414c56aaed4272d9e76f5a180624d3da48cc87ada8513385468d83043cad' 
  AND token = 'ID/R0JNOEGzw3hQMHn+JaTX9hrL04hnyDKnw7GC9xbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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