Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75bbe7043b039f888ac90acb1f1f0e27c925e715b3cf9fe8b7581c3627d03a24' 
  AND token = 'TG7kIdeK7Ulj/YcH3YBtUKuRm7qnm12FASw62XeDQls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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