Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f32e971c459a969e019d3318b76e2085d76fee54279ca57e822ab3316fadc270' 
  AND token = 'Ro8fWFblsfwfL1Dl+9obuDRX2vqG9Q+UaI9+wfoonhk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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