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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6067e1d609f50f364cfba45cdd568564afdf24992a1719a2516d7d9df5a2d72d' 
  AND token = 'q3+5hyiAT4fpvcmIL1GNfiD0AhwyG5+NNMhsBF7ewAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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