Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f8ff95ad80f6e9201930f68ffc8abb2c2a26533e9be994908965f8114b26c574' 
  AND token = 'LD1UmLpdRv1S7JAEWMgipcWP5Yn62xIN9EE3hDJTox4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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