Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9f47940fdf90427a2fa8c02a971a0cadc20efb640c1db048daf399d24deb973' 
  AND token = 's++NZHIy1AX+gVg1y1PAmzxwcgtXajjNn4Qs32AoIBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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