Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9afb65475fd78916767c66959d951bc53fcf5e58ebe08cf7273fa86c9bc74974' 
  AND token = 'z2ttsElsQMmf3ACMb/F7GRE+qcDUx+pu+3Jetcaks4s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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