Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7feb269fc7a651c1e5ac880c58e9c22f8411db2ebc8cd9b661dec3f6ef7b566d' 
  AND token = 'Y7jTaWSNWLmuCZuwkmjx70tGPl1Pyo02iiaGNVHlKwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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