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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ebb162f23f2166e9c325c41f1e49302d756a1c718d406cf368ce0e445dca422b' 
  AND token = 'BkIDiHgdajNbJs9nwNTE7CDaX2tcDWdVNvVwv1zXM8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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