Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8762531a640d750ea387ec350863e365dfcd25660b4125256080a9ab3fb9b86' 
  AND token = 'WOB1Pb+dNIrQT10o09gh0boH265l36KWGnGk3x4H8UY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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