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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96642f55e899d708173d2cfa97f2529986659c52c9f633e99952c4283ecb2882' 
  AND token = 'UNeCBoSOUgfdHJowR2cRD9U3W6I4uKM9iFh7o0XxOLo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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