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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99629c5aeada0a087d1ca61513b442714501dc12e101b76bbde655e3b7bacab1' 
  AND token = 'c++5DK9sK1BB+9+oNs1e4wl3Zyy5l+2FzdyJZwrHuG4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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