Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f234eaac14e4112f032fa32e298f3b2f90105893242e808d5c964c7b3870c81' 
  AND token = 'U5VliLCe9WMejtDvNT/Itr2DJesczF9Bb9h2AeIh1tc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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