Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cace87ee10def888f963af9769c14af1f14104f2f1a1164ecc8b2f19d5f764c4' 
  AND token = 'eotd12PzocQ310x0IBzt31Tdr3bNpxoAnk9tg+w7HiQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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