Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a7708f2449bbf45c75aabb49e75689c4d1840d61b32a96754aa182487d7000a0' 
  AND token = 'IZFg1FT2pFNVkhUacT5ESFgTuKiaprhS91Gpdqf3Wso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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