SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8a162462c9ce09d2ae2cda30bf4d33bfcfad7cb695549ae183fc0177ae843a0' 
  AND token = 'LVmBvxd+f/GnyjJrMr4wsULPDWXt1L1kR3Z6cJz/gCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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