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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7b2eba5b0f0022e08d336400550362f555226c13149e0db280f062464eea5af3' 
  AND token = 'DrlCK54nOzeKsHH3P+SPiZGufyE0LaiwVMKCDXeHBpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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