SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9fcd2948a0c7e72cd5983d0545ab3254d6b7c12cfac9d3faae3e75cf5e3e01f' 
  AND token = 'VT0wy+Z8K7G+FJYDW2SKEyIPXCQbeyYzMSgC+mkgc/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}