Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d9021b370e614f7173f26e683fbd3fa3d75f5f3d43055ea20f955657646c930' 
  AND token = 'W2mfk05WFim3G4R/VuNXi05WXHcvznhCVWu8aCiIVS0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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