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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36bffda6926700ae91589baaac80f7ed6c1707147def0c34154c672dc5f89d06' 
  AND token = 'H+yJOA4iwowVwwbKLmXGls7rI9QFBXpIs+1XEABFyJU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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