Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '082df9f20332eada9e349714b5ac286281bda8944bee4fa9f2bc646744df876c' 
  AND token = '+dl6GoS8Le4MlTZVBR4mX2w+3dqX+JZq5/UEKaOlHIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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