Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fafe970b17cd66b0760f59c591725b00eee94158cae07d55259222dfcdb038b' 
  AND token = 'J8Puqr6puLRIL/ddmy53xWZ9K2dqhdqs1gx1eRoWeoc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}