Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1749ca9faaef21a7661106723366219a3613406b18182910b6485971280c1e0' 
  AND token = 'EoUkZ3Xz8x47vmrR2dU1RxgWQFZdxGqSCBtZkjIbt58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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