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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06fd6b44a048a5cf4573ef7afb06cb8f3e6dcc630026fd6ef0d5fa4b0adc5565' 
  AND token = '+iK9L1eHSOfxfxVbcudGzAB9QSVUSfn19/btgdKExhY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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