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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01497919710189fafbc08816fed1c53a24389b273b998820622204fc2ed80434' 
  AND token = '3HrHnM+6VxWhY3zhjoxaySGfenM0TsYsjBquscUhp8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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