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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '092b1780049f78435079d4b54ff7f9a8b931276c982dc1689409cffd37f74cf1' 
  AND token = 'qQ5+c70FRuxSmZVkf91Y824G9LkhERAtYINDMQqx5O8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}