Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cd2fc7e691be6aac32af7446990fbe2473934847d38bef404693e6e723d577a' 
  AND token = 'EZrlxb7Uv8NUl3Br0RvZwYYf1Afo9mZl1csWSRe4NAo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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