Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2957facb02de26781893d1dadc0f6f38b420bdf9e07e7e6f89331e90279c8639' 
  AND token = 'EiY/40UJJFPXGUCKeaEnmFB0d3REJfaSnDf2weLvrLA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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