Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '84b3d78642d5dea8757ee80c2b1ed5edf3cce45543d40e816242d54a4392e498' 
  AND token = '+hcgBhN8pux3iinidhrjvQqT2a1JJTuC5NF49ctzsv8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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