Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7710ab854c780692190cc2089818f3da91059000f3145d1f816f558142d3775' 
  AND token = 'kv/Mxyuvvj0SPvplgbHkLc5f/Fo4kJ02PSoLPVMCcNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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