Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ff26b85a8d35859db83dcf00103a9bbb8778b581441cc11ddf746c55f18c5de6' 
  AND token = 'RLuXvWE3dH0SyzftU10eYQ5RomfymPUA1QxNIOVdgVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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