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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd9f6e6f92072d18897ac827f534cfc16e5e27b2924c858d9a31e285cab5afc5' 
  AND token = 'Z2qs8hGb9xrF5iaDih/rCM87kUiM2uxPvLV+kThNv20=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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